EM9201

Low-Voltage 2.4GHz transceiver IC; 1.9V to 3.6V battery operation, SPI interface

EM9203

1Volt, 2Mbps, 2.4GHz GFSK Transceiver

EM9209

Low Power 1.5kbps to 72kbps 2.4GHz ISM band RF transceiver; 1.9V to 3.6V battery operation, SPI interface